I will be arriving into SFO on Sunday, April 8th at 1025am on NH from NRT. I have a choice of 12:20pm or 3:43pm, and will use miles to get the tickets. How is immigration, and terminal xfer at SFO? Is 2 hours enough time? I see that the NH flights have been generally arriving 20-40 min early all this week, so while I think it might be tight it's probably doable.

As for JFK, I am departing at 12:30pm, I think from T7. Is 97 minutes enough time there, arriving on NW at 1053am at T4? Or, an arrival on SY at 10am is another possibility, unless I fly out the previous night.

Thanks for the help in advance!